Continuous weighing-scale.



PATENTED DEC. 4,1906. E. D. CARTER. CONTINUOUS WEIGHING SCALE.

APPLICATION FILED AUG. 21, 14105.

2 SHEETS-SHEET 1.

THE mamas PETERS 60., wasumcrou, o. c.

PATENTED DEC. 4, 1906."

E. D. CARTER. CONTINUOUS WEIGHING SCALE.

APPLICATION FILED AUG 21. 1905 2 SHEBTSSHEET 2.

atfopuaig THE NORRIS PETERS ca. WASHINGTON, n c.

' novel combination and arrangement of parts UNITED STATES PATENT FFIOE.

EDWARD D. CARTER, OF BRENHAM, TEXAS.

CONTINUOUS \NElGHING-SCALE.

No. 837,794. Specification of Letters Patent.

Patented Dec. 4, 1906.

Application filed August 21, 1905- Serial No, 275,047.

T0 at? whom it may concern: j or sacrificing any of the advantages of the in- Be it known that I, EDWARD CARTER, a vention. citizen of the United States, residing at Bren- In the drawings, Figure 1 is a side elevaham, in the county of Washington and State tion of an automatic scale constructed in acof Texas, have invented a new and useful cordance with this invention. Fig. 2 is an Continuous WVeigliingScale, of which the folend elevation of the same. Fig. 3 is a cenlowing is a specification.

tral vertical sectional view. Fig. l is a plan The invention relates to improvements in view. Fig. 5 is a detail view of one of the continuous weighing-scales.

. ates or doors. Fig. 6 is a similar view of the The object of the present invention is to catch for locking the gate or door in its closed improve the construction of scales and to position. provide a simple and comparatively 111G}?- l Like numerals of reference designate corpensive one which will be entirely automatic responding parts in all the figures of the in its operation and which will be adapted draw ngs. for continuously weighing material in bulk, 1 designates an oscillatory receiver consuch as grain or the like.

strncted of suitable material, preferably A further object of the invention is to pro j sheet metal, and provided with a central parvide a scale of this character in which the tition 2, arranged verticallywhen the receiver charge of material or amount weighed may is in a verticalposition and dividing the same be readily varied without adding weights to or removing them from the scale.

The invention also has for its object to improve the construction of that class of scales having an oscillatory receiver provided with a pair of compartments adapted to be alternately filled and discharged and to enable such scales to operate substantially fricinto two compartments, as clearly shown in Fig. 3 of the drawings. The receiver, which is mounted to oscillate on knife-edged bearings 3, has a tapered lower portion 4, and the central partition is provided with a lower forked portion 5, which presents in clined faces to the material and which contracts the lower portion of the comparttionlessly. ments. The inclined walls formed by the Another object of the invention is to imforked portion 5 facilitate the discharge of prove the construction of the mechanism for the material. The sides are preferably cut automatically operating the gates or doors for controlling the discharge of the material from the compartments of the receiver and to provide means for automatically closing and locking the same.

A further object of the invention is to pro vide a gate or door which will remain open until the contents of the compartments are entirely discharged and which may be readily adjusted to control the closing movement.

Furthermore, it is the object of the inven tion to enable a bag or sack to be quickly ap plied to the scale and to be securely held in position to receive the material weighed and to be quickly removed after it has been filled.

With these and other objects in view the invention consists in the construction and away between the forked portion of the central partition to provide an open space between the lower ends of the compartments to facilitate mounting a pair of hinged doors or gates 6. The top of the receiver is open, and the separate compartments are adapted to be alternately brought beneath the spout or other suitable means for discharging the material to be weighed into the scale. When the receiver is tilted to one side, one of the compartments is in position to receive the material, and. when the receiver is tilted in the opposite direction the other compartment is brought into position to receive a charge.

' The knife-edged bearings 3 consist of depending substantially triangular projections formed integral with attachment-plates 7 which are secured to the outer faces of the sides of the receiver at points below the center thereof. The tapered portions or projections rest stood that various changes in the form, prouponbearing-plates8,having suitablenotches ortion, size, and minor details of construcand mounted onasupporting-frame 9 within tion within the scope of the claims may be which the receiver oscillates. The supportresorted to without departing from the spirit I ing-frame 9 may be constructed of any suithereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appencee, it being underable material, and it preferably consists of corner posts or uprights and suitable horizontally-disposed. side and end connecting bars.

The hinged gates or doors 6 are provided with suitable pintles, which are mounted in bearing-eyes of straps or pieces 10, which. are secured to the outer faces of the sides of the receiver and which depend at the central bottom recess 1]. The pintles of the doors or gates are extended at opposite sides of the receiver and are provided with arms 12, carrying adjustable weights 13, secured to the arms by set-screws 14. and located at opposite sides of the receiver, so that the weight of one door will not interfere with the weight of the other door and the operation thereof.

The weights are adjusted so as to counterbalance and close the doors or gates when the receiver is empty, and when. a door hangs in a vertical position, as illustrated in Fig. 1 of the drawings, the arm is disposed at an inclination and is adapted to automatically close the door as soon as the contents of the compartment are completely discharged. A suitable stop 12 may be provided. for limiting the upward movement of the weighted arms, if desired. The doors or gates are locked in their closed position by means of catches 14, consisting of arms mounted on opposite shafts or pintles 15 and provided with beveled engaging heads. The shafts or pintles 15 are provided with outwardlyextending arms 16, carrying weights 17, which are secured in their adjustment by setscrews 18. The arms 16 are adapted to engage fixed trips 19, mounted on the supporting-frame of the scale and arranged in the path of the arms, whereby when one of the compartments receives its full charge and oscillates the receiver to bring the empty compartment into position to receive the material the downward movement of the full compartment will carry the arm 16 into engagement with the fixed trip and throw the catch 14 out of engagement with the hinged door or gate. The weight of the material will open the released or unlatched door or gate, and the entire contents of the full compartment will discharge before the door is closed by the weighted arm thereof. The door closes before the receiver is again oscillated, and when the receiver swings sufficient to lift the arm 16 from the trip 19 the catch 14 will be automatically carried into engagement with the door or gate and will lock the same in its closed position. The shafts or pintles 15 are mounted in suitable bearings of straps or plates 20, secured to the outer faces of the sides of the receiver at points beyond the discharge ends of the compartments. The fixed tripping devices are suitably mounted on the supporting-frame at opposite sides thereof.

The weighing operation of the scale is controlled by an oscillatory weighing-beam, which is in the form. of a skeleton frame composed of downward-tapered approximately triangular sides 21 and opposite weights 22, which are in the form of bars and which extend across the top of the scale. The weightbars 22, which connect the triangular end frames 21, are provided with attachment portions or flanges 23, which are bolted or otherwise secured to the top transverse portions of the end frames or members 21. The oscillatory weiglring-frame is pivotally mountat the lower ends or apexes of the tapering sides or members 2] by means of pivots or trunnions 241, extending laterally from attachi'nent-plates 25 and arranged in suitable eyes or bearings 26 of the sides or members of the weighing-frame. The weighing-frame is pivoted at points below the knife-edged bearings of the oscillatory receiver, and the weight of the charge of material is controlled by the degree of movement of the weighingframe, adjustable steps 27 being provided for limiting the movement of the weighingframe independently of the movement of the receiver. The adjustable stops consist of screws mounted in threaded openings of flanges or projections 28 of plates 29, which are secured. to the opposite walls of the receiver. The projections or flanges extend laterally from the receiver, as clearly illustrated in Fig. 2 of the drawings, and the in nor ends of the screws are arranged in the path of and are adapted to receive the sides or mei'nbers 21 of the weigring-frame. Suitable lock-nuts 30 are provided for securing the screws in their adjustment. The locknuts are arranged at and are adapted to engage the inner faces of the projecting portions or flanges 28. Any other form of ad justing devices, however, may be employed for limiting the movement of the weighingframe, and the receiver is provided with graduations 3], located adjacent to the screws, for enabling the Seine to be accurately adjusted. By adjusting the screws the weight of the charge neccsssary to oscillate the receiver may be increased or diminished, and this change in the weight of the charge is effected. without adding weigh to or removing the weights from the scale. The weight of the charge may also be varied by controlling the movement of the receiver and the consequent movement of the wcig igframe, and for this purpose opposite adj usting-screws 32 are provided. The receiver oscillates between and is alternately engaged by the opposite screws 32, which are mounted in threaded openings of flanges or projections of plates 341. The plates 34, which are substantially L-shaped, are secured to the top of the frame, and their upwardly-extending portions form the flanges or projections The screws 32 are provided with lock-nuts 35 for securing them in their ad- "ficient to overbalance the justment. The degree of movement is ascertained by a centrally-arranged indicator 36 and a series of graduations 37. The indicator 36 is mounted on and carried by the receiver, and the graduations, which form a central scale, are marked on the supporting frame. The movement of the receiver may be ascertained by bringing it to avertical po sition, with the indicator over the central mark of the scale 37, and the screws 32 may then be adjusted to permit the receiver to swing the desired distance to each side of the center.

The material discharges into the upper or higher compartment until the weight is suiweighing-frame, and the movement of the latter to the opposite side of the scale causes a sudden sharp movement of the receiver, which insures a quick action of the automatic scale and a positive operation of the tripping mechanism. The tilting movement of the receiver carries one compartment away from the discharging material and brings the other compartment into position for receiving the material.

The supporting-frame is provided with a tapering spout or chute 38, located beneath the receiver and provided at its lower contracted portion with an outwardly-extending bagreceiving ledge or flange 39, having an upwardly-projecting spur 40, adapted after the mouth of the bag or sack has been placed around the spout or chute to receive the loose portion of the bag or sack, whereby the latter will be securely held in position to receive the material. The spur or projection 40 extends upwardly from the flange or ledge 39 and enables a bag or sack to be quickly applied to and removed from the spout or chute. The ledge or flange is horizontal, and the spout or chute is provided at its top with an outwardly-extending horizontal attachmentflange 41, which is bolted or otherwise secured to the supporting-frame.

Having thus fully described my invention,

' what I claim as new, and desire to secure by Letters Patent, is

1. In an automatic weighing-scale, the combination of an oscillatory receiver, a weighing-frame pivotally mounted on the receiver and carried by the same in the movement thereof, said weighing-frame being also cap able of movement int ependently of the receiver, and adjusting means carried by the receiver for controlling the movement of the weighing-frame for varying the weight of the charge of material weighed by the automatic scale.

2. In an automatic weighing-scale, the combination of an oscillatory receiver, an oscillatory weighing-frame pivotally mounted on the receiver and carried by the same in the movement thereof, said weighing-frame being also movable independently of the re ceiver, adjustable means carried by the receiver for varying such independent movement, and means for varying the movement of the receiver.

3. In an automatic weighing-scale, the combination of an oscillatory receiver, an os cillatory weighing-frame pivotally mounted on the receiver, and opposite adjusting devices carried by the receiver for limiting the movement of the weighing-frame.

4. In an automatic weighing-scale, the combination of an oscillatory receiver, an oscillatory weighing-frame pivotally mounted on and carried by the-receiver, opposite adjusting (evices also carried by the receiver for limiting the movement of the frame, and other adjusting d evices for limiting the movement of the receiver.

5. In an automatic weighing-scale, the combination of an oscillatory receiver, an oscillatory weighing r'rame pivotally mounted on the receiver, and opposite adjustingscrews carried by also provided with graduations located adjacent to the screws.

6. In an automatic weighing-scale, the combination of a supporting-frame, an oscillatory receiver, a weighing-frame mounted on and movable independently of the receiver a central series of graduations arranged on the supporting-frame, an indicator carried by the receiver, and opposite adjusting devices mounted on the supporting-frame and limiting the movement of the receiver.

7. In an automatic weighing-scale, the combination of a supporting-frame having a central series of graduations, an oscillatory receiver mounted on the supporting-frame and having an indicator cooperating with the said graduations, said receiver being also provided with side graduations, an oscillatory weighingdrame mounted on the receiver, adjusting devices cooperating with the sid e graduations and mounted on the receiver in position for limiting the movement of the weighing-frame, and separate adjusting devices mounted. on the supporting-frame and co6pcrating withthe indicator and central graduations and limiting the movement of the receiver.

8. In an automatic weighing-scale, the combination of an oscillatory receiver, and a weighing-frame composed of sides pivotally mounted on the receiver, and weight-bars connecting the sides andarranged to clear the receiver.

9. In an automatic weighing scale, the combination of an oscillatory receiver, an oscillatory weighing-frame composed of downwardly-tapering sides pivotally mounted at the bottom on the receiver, and weight-bars located above the receiver and connecting the said tapering sides.

10. In an automatic weighing-scale, the combination of an oscillatory receiver, a

the receiver for limiting the movement of the frame, sald receiver being weighing-frame composed of open substantially triangular sides pivotally connected at the bottom to the receiver, and weightbars secured at opposite points to the said trianular sides.

11. I11 an automatic scale, the combination I of an oscillatory receiver having doors or gates hinged at opposite sides of the bottom, shafts mounted on the receiver and extending across the end walls thereof and provided with depending catches arranged to engage the free edges of the doors or gates, and arms extending from the shafts at opposite sides of the re ceiver and provided with adjustable weights. 12. In an automatic weighing-scale, the combination of an oscillatory receiver having opposite compartments and provided at the lower ends thereof with discharge-openings, gates or doors hinged to the receiver at the in ner sides of the discharge-openings and provided with weighted arms for automatically closing them, shafts mounted on the receiver at the outer sides of the discharge-openings and provided with catches arranged to engage the free edges of the gates or doors, arms I extending from the shafts and provided with weights, and means arranged in the paths of the arms for automatically releasing the gates or doors.

13. In an automatic weighing-scale, the combination of an oscillatory receiver having opposite compartments and provided with gates or doors hinged to the receiver at opposite sides of the center of the bottom, each door or gate having a weighted arm, which extends upward in substantially a vertical position when the door or gate is open, and the weighted arms being located at opposite sides of the receiver, stops for limiting the upward movement of the weighted arms, catches for holding the doors or gates in their closed position, and means for automatically tripping the catches.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

EDIVARI) D. CARTER. l/Vitnesses WM. PERRY, W. R. JorINxE. 

